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Experienced and professional animal trainer provide their insights in answering this question :
A. You should see a vet to check what is going on with the eye. It sounds like bleeding to the chambers of the eye but it should be confirmed by opthalmological exam

How to Identify Common Pet Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced pet care professionals :

Rapidly progressive cataracts can be very dangerous due to inflammation and irritation they can cause, and in some cases may result in the acute glaucoma development. If you detect sudden onset of vision loss or white eye milky appearance, contact your veterinarian immediately so eye can be evaluated.
Glaucoma in Dogs – Photos

Glaucoma in dogs may cause the eye to be very cloudy and red, as seen here. The pressure inside the eye is very high and this is considered a very urgent dog eye problem.

Signs Your Pet May Have Cataracts

Sometimes cataracts irritate the eye and can cause pain. In dogs, inherited cataracts are most common, with certain dog breeds more affected including Poodles and Poodle crosses, Havanese, Golden Retriever, and Siberian Huskies.

Your pup can get red eyes for various reasons, including an injury, a foreign object in the eye, allergies, and a host of eye conditions like glaucoma, conjunctivitis, and dry eye. If your dog has red eyes, you can take care of some issues at home, while others need to be addressed at a veterinary clinic.
Often, diabetic cataracts appear very rapidly, with a dog losing her sight within a day or two of having any trouble at all. Delaying or preventing diabetic cataracts has been a topic of great veterinary research. Oral antioxidants may delay formation, so talk with your veterinarian about what she recommends.
When a dog with cataracts is left untreated, they can become blind. The cataract completely blocks light from entering the eye through the lens and keeps your dog from seeing. The condition is still treatable at that time with surgery, but without treatment, it can develop into glaucoma.
Much like your own eyes, your dog`s eyes will become red if they are suffering from an infection, irritation due to a foreign object, dry eyes, or physical trauma. Our Greensboro Board Certified Veterinary Ophthalmologist and team share the causes and treatments for red eyes in dogs.
Cataracts that are secondary to diabetes mellitus are increasingly common in dogs. The increased blood glucose causes sugars within the lens of the eye to accumulate. Normally, these cataracts develop quickly and can rupture the lens capsule.
In addition to vision loss, chronic cataracts can cause excruciatingly painful, unmanageable secondary issues within the eye, for which the only recourse is enucleation, or surgical removal of the eye. This happens because the lens continuously degenerates over time, sparking chronic inflammatory changes around it.
Advanced cataracts can lead to inflammation inside the eye so dogs with cataracts should be treated with anti-inflammatory eye drops.
It`s essential to visit your veterinarian to determine the cause and begin appropriate treatment. Your vet may prescribe eye drops and/or ointment to treat the infection, promote healing, ease any discomfort or itchiness, and possibly treat the underlying condition.
Treatment for Swollen Eyes in Dogs

Once they examine your dog and determine the cause, they may prescribe eye drops, antibiotics, anti-inflammatories, or steroids. Surgery, dental procedures, and other treatments may also be necessary depending on the cause of the swelling.

Cataracts are also caused by aging changes in many dogs. This type of cataract normally affects dogs over four, with the average age for age-related cataracts being 9 years old. Yorkshire Terriers are the most common breed to develop age-related cataracts.
There are no scientifically proven eye drops that can improve cataracts. How can I treat my dog`s cataracts naturally without surgery? There is no scientifically proven natural treatment for cataracts in dogs. It`s important to consult with a veterinarian for appropriate treatment options.
Veterinarians say there`s no known way to reverse or even slow the progression of cataracts. In immature cataracts, your vet may suggest eye drops until cataracts progress further. But generally, they`ll tell you cataract surgery is the only option. And they`ll recommend doing the surgery sooner, rather than later.
Sensitivity to light and glare. Need for brighter light for reading and other activities. Seeing “halos” around lights. Frequent changes in eyeglass or contact lens prescription.
A red eye is usually nothing to worry about and often gets better on its own. But sometimes it can be serious and you`ll need to get medical help.
As protein denatures in the lens, it tends to turn brown. Left in the eye, the proteins continue to denature, changing the lens` color to red, black, or white. This condition is irreversible, except with surgery, despite recent social media claims to the contrary.
The appearance of your dog`s eyes can also tell you a lot about their eyesight. Blind dog eyes tend to look cloudy, red, or swollen. Their pupils may also stop dilating when they`re exposed to light.
Often the first sign of Nuclear Sclerosis is a blueish or cloudy haze in both eyes. It might look like it comes and goes but this can be due to the lens changing size in different light. It can be easy to mix up Nuclear Sclerosis with cataracts, but your Vet will be able to examine your pet`s eyes and advise you.
Cholesterol deposits in a dog`s eye appear as opaque, grayish-white spots that are round or oval in shape. These spots are caused by an accumulation of lipids (fat) on the dog`s cornea. As the name implies, the lipid consists of crystals of cholesterol and its associated chemical compounds.
What is the treatment for cataracts in dogs? There are currently no medical treatments to treat cataracts. However, a surgical technique called phacoemulsification is used routinely and very successfully in animals and humans. This procedure removes the cloudiness and restores sight to the affected eye.
If your dog`s eyes are weeping, watering more than usual, or you notice yellow, green or white coloured discharge, they may have an eye infection. Other signs of eye infections in dogs include pawing at their eye, blinking more than usual, swelling, redness and squinting.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Q. My 13yr old Pomeranian/Poodle has cataracts. One eye turned red behind the cataract & the white part of the eye. Some discharge. Not painful.
ANSWER : A. You should see a vet to check what is going on with the eye. It sounds like bleeding to the chambers of the eye but it should be confirmed by opthalmological exam

Q. Weak, discharge from eyes, swelling on right eye, does not want to open eyes. What is wrong?
ANSWER : A. If the discharge from the eye is green or yellow in color, it can indicate a secondary infection. Swollen eyes can be caused by a number of things ranging from allergies to infections, to injury to the eye itself or surrounding areas.

It is best to have your pet’s eye examined by your local vet. They will most likely wish to place a stain in the eye that can check for damage such as cuts or scratches. An ointment can then be given to help reduce inflammation, pain and take care of infection.

Until you can get to the vet, be sure to not let your pet scratch or paw at their eye as this can make things worse. You can also use a warm wet washcloth to gently remove any debris and allow the eye to open some, providing relief. However, if symptoms worsen, or the swelling travels to the face, head or neck, it may indicate a serious allergic reaction which should be treated immediately.

Q. One eye is more red than the other. Last night he was pawing at it,today, he isn’t. Should I bring him to the vet?
ANSWER : A. Sounds possible that he had some irritation to the eye that is at least not itchy anymore. You can do either, having it checked now to confirm mild irritation, potentially due to debris or a topical irritant to the eye; or you can flush the eye with sterile saline eye wash (over the counter) using care not to poke or prod the eye and see if the irritation goes away on its own within the next 24 hrs. It has shown improvement already it appears, however if it is not cleared up and your pet seems irritated by it AT ALL, then it should be looked at by a vet and tested for a possible corneal scratch or ulcer. These can cause redness of the eye, eye discharge and pawing at the face. They are usually treated by prescription only topical eye antibiotic ointment and generally do very well after treatment.

Read Full Q/A … : Eye Problems in Cats

Q. I’m almost positive my dog is afraid of the dark! Every time I turn off the light she starts crying! Is there a way I can teach her not to be afraid
ANSWER : A. You may need to take things very slowly. First off, you should consider using a night light in the room you have your dog in. I have a night light in my room for my dog, even though I don’t feel the need to use one. You should have a handful of treats, and toss several of them to your dog. While your dog is eating the treats, shut off the light, and then turn it back on and toss several more treats to your dog. While your dog is eating the treats, turn off the light and count to three, then turn it back on. Toss several more treats to your dog, turn off the light and count to five. Turn the light back on, toss several more treats to your dog, shut off the light, count to four. Turn on the light, toss treats, turn off light, count to eight. Turn on light, toss treats, turn off light, count to five. The key is to randomly increase and decrease the amount of time the pup is in the dark. Work on it slowly, slowly build duration. Do not expect it to happen all in one session.

Q. My pet is suffering eyes discharge, what should I do?
ANSWER : A. Mucus, yellow-green pus, or a watery eye discharge can all be signs of conjunctivitis, which is inflammation of the lining of your dog’s eye.

There is a wide range of causes for conjunctivitis, from allergies, injury, birth defects, and tear duct problems, to foreign bodies, dry eye syndrome, infections or even tumors.

Other signs of conjunctivitis include excessive blinking or keeping the eye closed, squinting and pawing at the eyes.

Treatment of this condition depends on the underlying cause. In most of the cases cleaning, soothing the eye and applying antibiotics eye drops suffice but is some instances further investigation is required to establish the cause of the excessive eye discharge, and this should be performed by a veterinarian.

Q. I have two 3 week old kittens that I am bottle feeding. The kittens both have diareaa and there buts are red. Is there anything I can do ?
ANSWER : A. Diarrhea in kittens can be caused by many things, including intestinal parasites (very common in kittens), wrong formula, recent changes in diet (from queen’s milk to formula or from one formula to another), and other gastrointestinal upsets. Their bottoms are likely red and irritated from the diarrhea soiling the fur and skin, trapping moisture against the skin and serving as a breeding ground for bacteria. First, stop feeding the formula. Second, collect a fecal sample to be analyzed by your veterinarian for intestinal parasites. Third, call your vet and make an appointment as soon as possible, ideally the same day. Diarrhea in kittens is serious business and can lead to death from dehydration and loss of nutrients. Finally, in place of formula give an electrolyte replacement solution (like Pedialyte for infants/children) – plain, no flavors, no colors – for at least the next 1-2 feedings. This is not the same as a sports drink. After the 1st or 2nd feeding of straight electrolyte replacement solution, start to add formula back into diet at 1/4 strength ( 1 part formula to 3 parts water), The following feeding mix 2 parts formula to 2 parts water. Then, 3 parts formula to 1 part water. Finally, offer full-strength formula. If the diarrhea continues or worsens with increasing amounts of formula, go back to just electrolyte solution and repeat the process.

Q. I was told by my vet that my dogs cherry eye was caused by something hitting his eye when he was poking around under a bush. I was told surgery needed
ANSWER : A. Prolapsed gland of the eyelid refers to a pink mass protruding from the animal’s eyelid; it is also called a “cherry eye.” Normally, the gland is anchored by an attachment made up of fibrous material. The most common sign of “cherry eye” is an oval mass protruding from the dogs’s third eyelid. It can occur in one or both eyes, and may be accompanied by swelling and irritation. He may have acquired it by getting an injury to his eye but this isn’t the case sometimes. Sometimes there is a weakness in the fibrous attachment.

The veterinarian will review the mass in the dog’s third eyelid and determine if there is an underlying cause for the condition. The diagnosis of the prolapsed gland could be scrolled or everted cartilage in the third eyelid, abnormal cells in the third eye, or a prolapse of fat in the dog’s eye.

Treatment often includes surgical replacement of the gland in the dog’s eye, or removal of the entire gland if the condition is severe. Conversely, if medications are recommended, they are typically topical anti-inflammatory drugs that are effective in reducing swelling.

Q. My cat has entropion of the eyes. Vet did surgery on both eyes, the right eye seems ok but the left eye is still running/mucus. Can I use Neosporin?
ANSWER : A. Do NOT use Neosporin on cats or dogs as this product can be toxic to pets if ingested. If the eye is still leaking or has green or yellow discharge it is best to contact your veterinarian. Green or yellow discharge can indicate that a secondary infection has formed and may require antibiotics or cat-safe ointments to help clear it up. In the meantime, you can use a warm wet washcloth to remove any excess debris from the eye very gently, allowing the eye to open and help with healing.